M4.6 Earthquake Hits South Flank of Kīlauea Volcano – Widely Felt on Big Island and Some Reports from Maui, Lānaʻi, Oʻahu and Kauaʻi

At 11:20pm on Thursday, July 2nd (2020-07-03 09:20:01 UTC), a M4.6 earthquake shook the south flank of Kīlauea at a depth of about 4.2 miles.

The estimated epicenter is within Hawaiʻi Volcanoes National Park beneath Pulama Pali, initially placed near the hairpin turn in the Chain of Craters Road.

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Earthquake map showing the epicenter of the m4.6 earthquake at Kilauea volcano on Big Island, Hawaii on July 3. Map via USGS

Felt reports have now come in from Maui, Lānaʻi, Oʻahu and Kauaʻi as well as shown on the map below.

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The M4.6 earthquake was widely felt on Big Island. Reports also come from nearby islands Maui, Lānaʻi, Oʻahu and Kauaʻi as well. Picture: USGS

Civil Defense and the Pacific Tsunami Warning Center report that despite the widespread reports, the event is too small to generate waves and “there is NO TSUNAMI THREAT to the Island.

Those in the nearby Volcano communities report this as the heaviest shaking since 2018, perhaps due to proximity and shallower depth.

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Kaena Point Seismograph capture from USGS-HVO after July 2, 2020 event. Picture USGS

Given its location and depth beneath the South Flank, this event falls into the post-2018 M6.9 grouping accommodating continuing flank movement.

This does not on its own indicate any change in the non-eruption, but we will continue to monitor USGS feeds and reports for any changes warranting further public update.